UWE is looking for more folks to test updates to NS2 before they are put on steam. This is a great opportunity to give back to the NS2 community, but as stated in the quote, it is real work and often painfully dull.
Playtesting is tough work. It requires a time commitment of several hours per week. During these hours, there can be monotony. At any one time, there are hundreds of known bugs in NS2. Playtests often involve checking a large list of these against claims of 'fixing' by any number of people named Brian. (Love you Brian!). This can, for example, lead to situations in which five playtesters attempt to chase a Gorge through a Crag wall while singing 'God Save the Queen' over voice chat.