On the left frame, they had a "sliding tree menu," so under every topic there was subheadings. The problem - clicking on these subheadings didn't work and I couldn't figure out how to get to most of them. I consider this a major problem, mostly because they are targeting technological companies, so their site should be more impressive and work correctly.
Some good features however was a search engine on the top frame that took you mostly to all of their works. I think search engines are very helpful especially when they are so visible. They also had a very conveniently located "contact" page which makes it helpful to contact them quickly. Another good feature was that at the bottom of every page, they had the same general links as the toolbar on the left. This is a very important feature and sometimes is even easier to use.
They also had examples of their press releases which was helpful as well as a listing of all their clients. While looking at a past client list, I read they were the first PR firm for AOL and Earthlink - very impressive! This basically gets back to my main point though - for such an impressive firm, their web site should really be sronger. While it might only be a tool to find out about the company and not necessarily a selling feature, it should be stronger to better represent the company.