Referring URLs Traffic Question

[terrytowel]

I was checking my traffic today

And I see a lot of my ref urls are appended with

?_gwt_pg=1 or ?_gwt_pg=x

Ex. mydomain.com/index.html?_gwt_pg=1

I never noticed it before.

Does anyone know what it is, and should I be concerned?

[marcjacob]

Not really. Its just arguments passed from the previous page. Like this site uses showthread.php?t=2985 where its passing 2985 as the topic number, which php can the use to find then thread in a database.