Your work is appreciated, most of the suggested changes make sense. Though I rejected one yesterdayrejected one yesterday because the change is not helpful.
"Network" is a very important part of the text which was not visible anymore in the new text. I have edited the tag wireshark now, you can open its wiki and excerpt history to see the changes I made.
I also saw that some of your edits (including this Wireshark one) explicitly contain the word "FOSS", but in my opinion that is not the most important part of an excerpt. Most programs in Ubuntu are FOSS anyway, you only need to add "proprietary" or "closed-source" to non-FOSS software like Nvidia drivers. Not every reader (new users) here know what FOSS means as it is pretty specific to the FOSS community.
See also the linked blog posting on the right of the wiki editing controls on what a tag wiki should contain: http://blog.stackoverflow.com/2011/03/redesigned-tags-page/