1) Direction indicator 2) Directional aid 3) Footpath aid 4) Guidance giver 5) Guidepost 6) Help provider 7) Internet marketing company 8) Obvious clue 9) Pointer 10) Sign 11) Stake out by the road 12) To install signposts on 1) Fingerboard 2) Fingerpost 3) Landmark 4) Marker 
[company] Signpost is a technology company that develops marketing automation software for local businesses to build relationships with new and existing customers. In 2014 Signpost was named by Forbes as one of America’s Most Promising Companies The company is headquartered in New York City and has offices in Austin and Denver. == Product...
• (n.) A post on which a sign hangs, or on which papers are placed to give public notice of anything.
Sign'post` noun A post on which a sign hangs, or on which papers are placed to give public notice of anything. 
[n] - a post bearing a sign that gives directions or shows the way 2. [v] - mark with a signpost, as of a path
guidepost noun a post bearing a sign that gives directions or shows the way