diff --git a/FAQ.md b/FAQ.md
index f8d020714..bdf89ce84 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -12,3 +12,18 @@ optimize their implementations and take better advantage of hardware acceleratio
 In other words, the decision to use SVG rather than canvas was a classic performance
 vs. implementation cost tradeoff with strong arguments for trading off performance to
 reduce implementation costs.
+
+## Can I use iD offline?
+
+iD does not currently have an offline mode.
+
+To support offline usage requires caching or providing an offline proxy for the three
+main things iD uses the network for:
+
+* Downloading existing data -- this is done on demand as you pan around
+* Downloading tiles -- ditto
+* Uploading changes
+
+We've though a little about [caching tiles](https://github.com/systemed/iD/issues/127)
+and downloaded data, but haven't actively worked on it, nor on the data download/upload
+question.