連絡先

[Knocks]

Does anyone know what the more standard way to pronounce this phrase is: れんらくせん or れんらくさき? The context is Gmail's "Contacts" page.

Also, what meaning does the 先 character have here? It's probably safe to assume that it doesn't mean previous or former.

[Belton]

As a suffix 先 さき　has the meaning of address, destination or place.

行き先　いきさき　destination
宛て先　あてさき destination, address
勤務先　きんむさき one's place of employment　
連絡先　れんらくさき contact address

[Knocks]

That's great, thank you. So it's not　れんらくせん? Rikaichan is giving me both pronunciations.

[Belton]

Both are in Edict which Rikaichan uses.
However in other dictionaries (KKLD, OSX built in, Ryaku81) the reading is given only as renrakusaki.

Based on other similar usages of saki I'd go with renrakusaki.

[Kat]

Knocksさん、

はじめまして! I'm Kat, and I'll be hosting the Newbie lessons with Naomi先生　from now on.

Just to confirm what Beltonさん said, this kanji is always read れんらくさき. I've never heard anyone say れんらくせん.