You can submit answers to my webpage http://camoo.freeshell.org/roadtoreality.html by emailing me at pbbl@cyberspace.org; include the "word" RTRCZ in the subject line to get through the mail filter. Your solution would be posted either with a link to mail comments to you, or with your email address in a form like "pbbl at cyberspace dott org" so you won't get spammed.
The advantage of the website is that the solutions will be sorted in the order they appear in the book. The forums are a mess because the solutions aren't ordered.
I don't vouch for any solutions on the webpage, except for my own. I don't intend to check solutions emailed to me for accuracy. But if you have some comment on a solution, you can email it to the person who wrote the solution; or to me, if they don't respond.
I have a couple of rules for format of solutions. I *would* like them formatted, please no lame "sum over n of S^n(a_n)" pidgin Latex. Some format that is widely readable - .pdf, .doc, .html, .gif.; Latex or some other equation editor.
Not Latex source, though. Maybe for the solutions written in the forum's built-in Latex, you can send some kind of html file with embedded images.
It's find if you send me images of handwritten solutions but please send them in .gif format, not .jpeg.
Laura

The exercises can be sorted in an appropriate order. e.g. Ex. 1.1; Ex. 1.2; etc.

Scroll to the bottom of the "Solutions" forum, and you'll find options to sort the topics in various ways.