Comment Links hidden in special characters? ( , : - . ' )

Hey guys,
I found a PR 5 site that let me make a bunch of comments on random pages and the links stuck for two days. Then my anchor URL's were removed, yet they left my comments. If I resubmit comments with links so they aren't visible to the naked eye in characters such as: , : - . ' do you think they have a chance at sticking? Anyone have experience hiding links in comments?

if they are moderating the comments, you will not trick them by hiding your link behind a ":". Also, i doubt this will look very good on your backlink profile. If I were you I would just try and make a few comments every few days.. without links, as if you follow this blog and then place one in a relevant and non-spammy way.

Also, to make sure you are not wasting your time, check that the links are dof0ll0w.

hmm encrypted comments eh?