I'm curious as to what the letter "B" stand for in the server listing.

[cyprezz]

This is something new I never seen before. What does it mean? And since I'm at it, I might as well ask what the other icons stand, such as the head phones, penguin, and number 64 icon.

[Anazuke]

It shows that the server is running the current server side hotfix B. Check highlights forum.

[AncientMan]

Server OS (Windows, the rectangle box / Linux, the penguin / Linux 64, the 64) | VOIP | Passworded Server | Server Hotfix Letter | Server Name | Ping | Players | Map Name | Game Mode

Always join servers with the with the latest hotfix, at the moment the latest hotfix is B, which fixes these issues.

[cyprezz]

Thanks.