Free online survey/polling system comparison

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Recently wanted to do some research on my blog. So in a few free online polling system for a turn, try all the following here to do a summary.
The main use of the following voting system:
　

easy to cast nets youpolls freepolls Istex: Japanese, simply do not understand, forget it. :) easy-poll opoll dpolls nupolls polldaddy: Introduction says it's free, but it's now charged. So there's no research on Pollpub

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The main directions for comparison in these systems are function, language, and ease of use.

　 Easy to cast network youpolls freepolls easy-poll opoll dpolls nupolls pollpub Interface Language English English English Chinese support very good difference is good difference generally have no advertisement No no no no no no no interface friendly very good general good poor easy to operate easily general complex generally easier general general general vote RSS Support does not support not support not supported Radio/Multiple Radio/Multiple select Radio Radio Radio/Multiple choice Radio/Multiple Choice Radio Radio/Multiple choice custom other options Y n n n + N n + N Answer quantity unlimited maximum 10 unrestricted unlimited unlimited unrestricted maximum 20 maximum 20 limit repeat voting Co Okie do not restrict the cookie cookie cookie without limiting the voting to everyone open can be set only to members of the public publicly only to members of the public vote only for members of the limited unrestricted Unlimited unlimited unlimited 30 days unrestricted Unlimited Unlimited Support for embedded support unsupported support unsupported unsupported support unsupported Flash embed support unsupported unsupported unsupported not supported not supported does not support unsupported JS embed support unsupported support not supported not support not supporting non-- Support Support does not support support unsupported support not supported support strength Help/Forum help help help assist help helping help poll report very well only roughly general general generally general general generally, you may not be able to add your own links can not be 　 　 　 　 　 　 Other restrictions on 10 [other] polling traffic restrictions other explanations mainly in the political aspects of the vote more, incredibly and slander Kim Jong-il, hehe

The table above shows the best results in green. Obviously, it's better to be easy to cast. Pure Chinese, simple operation, no ads, you can hide the vote on the site, embedded way, support the vote RSS (in my IE7 can see the results of the vote at any time), the strength of support is also good. Embedding is much friendlier to end users, who don't need additional registrations to vote, or leave my own blog. See, easy to cast nets or some kung fu, all the links are pop-up new windows, not let traffic leave my site,: The use of support is also easy to cast nets best, for those who are not familiar with HTML, this is also a key to doing a good job of network marketing.

Moreover, in all systems, the reporting quality of the easy-cast network is the best. It also looks friendly, making the voting results a histogram, and lists the answers to "other". Do not simply list percentages like other systems.

There is also a point, for the webmaster is also very important, easy to add their own network links. This is equivalent to their own site a useful link, I also checked the source code, this link does not use the "nofollow" tag, which means that the link to the search engine is effective.

The only regret is that the investment net offers only 10 "other" votes. ：（

In addition, the easy to cast the net homepage to have many interesting votes, the strange, haha ... Fun。