Related Clues:

• Wait secretly
• View an online forum without contributing
• Ambush means gamble
• Keep out of sight in mid-Wales old city on the weekend
• Read, but never post
• Lie hidden
• Accost unexpectedly
• Wait in secret
• Attack from a hiding place
• Approach position, await and intercept
• Hang about menacingly
• Read, but don't post
• Try to stay unseen
• Read (but take no part in) online chat
• Evade detection, in a way