Pros

• really cheap annoying Ice
• unbreakable effect

Cons

• can get pretty obsolete, if you don't have anything to advance on the table
• remember that Agendas cannot be scored on the Runner's turn, so you cannot use this to protect a remote then 'finish' an Agenda in that server as the runner is running in

Thoughts

• the advancement effect is the main reason to play this Ice, otherwise consider Hunter
• advancing Ice seems to be the most reliable way of using Matrix Analyzer
• especially putting a Matrix Analyzer in front of an Ice Wall makes for a cheap and adaptable defense
• this is also possible with Shadow. Shadow however has an upper limit on its price tag (2 credits and a tag) so Ice Wall seems stronger.
• Shadow also is a bit redundant behind a Matrix Analyzer being a 2nd tracing sentry
• but generally all Weyland advancable Ice can be considered
• there is also some potential for bluffing, if you place the Analyzer on a remote server. Runner attempts a run and you advance the card he is running... Now what is it? (going from 2 advancements to 3 on a Project Junebug can make a big difference!)
• starting to advance an agenda when the runner runs on his last click is pretty funny but narrow
• all in all Matrix Analyzer is probably best placed on a central server