There are several ways to find out what's new in each TWiki web:
http://oa.vtc365.com/twiki/bin/view/<web>/WebAtom
search=value
parameter to the URL, e.g. http://oa.vtc365.com/twiki/bin/view/TWiki/WebAtom?search=plugin is a what's new feed about Plugins.
Each web has a WebAtom topic which includes part of this WebAtomBase topic. This topic is the base for the ATOM feed and generates an WebAtom 1.0 feed for TWiki:Codev/AtomSyndication.
The WebAtom topic in each web contains the following text:
<title><nop>%WIKITOOLNAME%'s <nop>%INCLUDINGWEB% web</title> <subtitle>(the description of the web, plain text with no markup and no wikiwords). TWiki is an Enterprise Collaboration Platform.</subtitle> %INCLUDE{"%TWIKIWEB%.WebAtomBase"}% <!-- * Set SKIN = rss -->
Below part is included by each WebAtom topic:
%STARTINCLUDE%<link rel="self" type="application/atom+xml" href="%SCRIPTURL%/view%SCRIPTSUFFIX%/%INCLUDINGWEB%/%HOMETOPIC%"/> <id>%SCRIPTURL%/view%SCRIPTSUFFIX%/%INCLUDINGWEB%</id> <rights>%WEBRSSCOPYRIGHT%</rights>%CALC{$SET(c,0)}% %SEARCH{"%URLPARAM{"search" default=".*" }%" web="%INCLUDINGWEB%" regex="on" nosearch="on" order="modified" reverse="on" nototal="on" limit="16" format="$percntCALC{$IF($GET(c)>0, , <updated>$isodate</updated>$CHAR(10))$SETM(c, +1)}$percnt<entry>$n <title>$topic</title>$n <link rel=\"alternate\" type=\"text/html\" href=\"%SCRIPTURL%/view%SCRIPTSUFFIX%/$web/$topic?t=$isodate\"/>$n <id>%SCRIPTURL%/view%SCRIPTSUFFIX%/$web/$topic</id>$n <updated>$isodate</updated>$n <summary>$summary (last changed by <nop>$wikiname)</summary>$n <author>$n <name><nop>$wikiname</name></author>$n</entry>"}% %STOPINCLUDE%
See also: WebRssBase, TWiki:Codev/AtomSyndication