It's strange to say that something on a forum that's in the "Off topic" category is "off topic", but this one surely is. SE isn't meant for tech stuff.
Moreover, it's duplicate. The same post is posted in the Small Business forum: http://forums.cnet.com/5208-10150_102-0.html?forumID=101&threadID=321038&messageID=2931157
So I'm locking it here.
we're a small business that does a lot of advertising on sites like craig's list. we generally use proxy servers to do most of our posting. however, lately, any postings that we do from a proxy gets caught in the craig's list filters. is it possible for a site like CL to have the ability to differentiate between a proxy ip and a non-proxy? any one have any tips on how to deal with this issue? thanks.