Here’s the hiptop HTTP Header Information. Some interesting stuff:

HTTP Request GET … HTTP/1.0
Accept text/*, image/png, image/gif, image/jpeg
Accept-Language en-us
Cache-Control max-age=259200
Connection keep-alive
Host randomfoo.net
User-Agent Mozilla/5.0 (compatible; AvantGo 3.2; ProxiNet; Danger hiptop 1.0)
Via 1.0 w29.dngr.org:3128 (Squid/2.4.STABLE6)
X-AvantGo-Screensize MjQweDmyMABQ
X-Dangerous-Stuff Totally
X-Fowarded-For 63.241.65.15

Note, that while there’s the X-AvantGo-Screensize, it’s definitely not standard (maybe my base64 decode is wrong, but it says 240×960?). I’m guessing it’s a custom backend. If it were really an AvantGo backend, it should be sending all the AvantGo headers, and same support, right? Also, AvantGo doesn’t support LINK or STYLE at all according to this table.